Penman Monteith Method
Mostrando 13-24 de 37 artigos, teses e dissertações.
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13. ESTIMATE OF REFERENCE EVAPOTRANSPIRATION THROUGH CONTINUOUS PROBABILITY MODELLING
ABSTRACT This study aimed at testing the fit of continuous probability distributions to a daily reference evapotranspiration dataset (ET0) at a 75% probability level for designing of irrigation systems. Reference evapotranspiration was estimated by the Penman-Monteith method (FAO-56-PM) for eight locations, within the state of Espírito Santo (Brazil), where
Eng. Agríc.. Publicado em: 2017-04
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14. PERFORMANCE OF ESTIMATIVE MODELS FOR DAILY REFERENCE EVAPOTRANSPIRATION IN THE CITY OF CASSILÂNDIA, BRAZIL
ABSTRACT Before choosing the method of the estimate of reference evapotranspiraton (ET0) in a region, it is important to evaluate the degree of precision of the model. The present research aimed to evaluate the performance of 30 methods for daily ET0 estimate in the Cassilândia city, Brazil. The meteorological data had been obtained from the National Instit
Eng. Agríc.. Publicado em: 2017-02
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15. COMPARISON OF METHODS FOR ESTIMATING REFERENCE EVAPOTRANSPIRATION: AN APPROACH TO THE MANAGEMENT OF WATER RESOURCES WITHIN AN EXPERIMENTAL BASIN IN THE BRAZILIAN CERRADO
ABSTRACT This study aimed to compare methods for estimating reference evapotranspiration using an experimental basin in the Brazilian Cerrado, for water management purposes. For that, we estimated daily reference evapotranspiration over a certain period (time series between 1982 and 2012) through different empirical methods. These methods consisted of Blaney
Eng. Agríc.. Publicado em: 2016-12
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16. Estimation of climatological water deficit in an experimental watershed in the brazilian cerrado
ABSTRACT This study aimed to estimate the probability of climatological water deficit in an experimental watershed in the Cerrado biome, located in the central plateau of Brazil. For that, it was used a time series of 31 years (1982–2012). The probable climatological water deficit was calculated by the difference between rainfall and probable reference eva
Eng. Agríc.. Publicado em: 2016-08
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17. Estresse hídrico em Alecrim-pimenta (Lippia Sidoides Cham.): aspectos fisiológicos e produtivos
This study aimed to characterize the culture of rosemary-pepper (Lippia siodides Cham.) face to water availability, evaluating the productive behavior and physiology of the plant. The experiment was conducted in lysimeter drainage, at the Institute of Agricultural Sciences of the Federal University of Minas Gerais, in the city of Montes Claros, Minas Gerais
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/08/2010
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18. UTILIZAÇÃO DO ÍNDICE DE ÁREA FOLIAR OBTIDO POR SENSORIAMENTO REMOTO PARA A ESTIMATIVA DA EVAPOTRANSPIRAÇÃO DE REFERÊNCIA NA BACIA DO PRATA
In this work the estimate of evapotranspiration over the region of the Plata Basin, using data of leaf area index obtained from remote sensing, through the MODIS. The method used to obtain the estimated evapotranspiration is known as the Penman-Monteith. This technique uses as well as atmospheric forcing of net radiation, air temperature, relative humidity a
Publicado em: 2010
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19. Modelling evapotranspiration for reference crop and acid lime orchard based on regression and artificial neural network tecniques / Modelagem da evapotranspiração de referência e da evapotranspiração de limeira ácida com aplicação de técnicas de regressão e redes neurais artificiais
The main objective of this study was to test artificial neural networks (ANNs) of multilayer perceptron type (MLP) for estimating reference evapotranspiration, diffusive leaf conductance and crop evapotranspiration of a mature and irrigated citrus orchard. The ANNs were trained under conjugate gradient algorithm. The sigmoid and linear activation functions w
Publicado em: 2010
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20. MODELO DE ESTIMATIVA DA RADIAÇÃO LÍQUIDA E SUA APLICAÇÃO NA DETERMINAÇÃO DA EVAPOTRANSPIRAÇÃO POTENCIAL
This study aimed to assess and develop a physical mathematical model to estimats the net radiation. For this we used weather data collected from the meteorological station of the Department of Physics and Meteorology of the Escola Superior de Agricultura "Luis de Queiroz" - ESALQ - University of São Paulo - USP, Piracicaba, Brazil, according to the global r
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/07/2009
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21. Manejo da irrigação do feijoeiro cultivado em plantio direto no sistema integração lavoura-pecuária / Irrigation management of no-tillage common bean crop in farming-livestock system
The water is becoming a resource more and more scarce, with growing strategic importance in the sections environmental, economical, social and political. The irrigated agriculture is responsible for considerable portion of the agricultural production, however, it is the activity that more it demands water. In the irrigated areas, one of the most important fa
Publicado em: 2009
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22. Reference evapotranspiration based on air temperature data for the state of Minas Gerais: evaluation of solar radiation estimates based on fuzzy logic / Evapotranspiração de referência com base nos dados de temperatura para Minas Gerais: avaliação da radiação solar baseada em lógica fuzzy
The evapotranspiration (ET), from the agrometeorological point of view, is very important. It indicates the loss of water by vegetation and the surface. It is a fundamental parameter in water management in various sectors of engineering, agronomy, hydrology, etc. Currently, the standard method recommended for estimating the reference evapotranspiration (ETo)
Publicado em: 2009
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23. Effect of the water stress in the production of the orange tree in the North of the state of São Paulo / Estudo dos efeitos do déficit hídrico na produção da laranjeira no norte do Estado de São Paulo
The Brazilian citrus industry in recent years, is making a significant leap forward, currently is leading the world production, with emphasis on the state of Sao Paulo that represents 80.50% of the total produced, with an average 25 t ha-1 year1 (IBGE, 2007). Flowering is stimulated by low temperatures and water stress that changes the plant hormonal balance
Publicado em: 2009
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24. Tecnologia do irrigâmetro aplicada no manejo da irrigação do feijoeiro / Irrigâmetro of technology applied in the irrigation management of the bean
This work was performed at the Irrigation and Drainage Experimental Area of the Agricultural Engineering Department at the Universidade Federal de Viçosa (UFV), in Viçosa, located at 20 45` S and 42 45` W, in the state of Minas Gerais, Brazil, during the period of March to October of 2007. The objectives of this study were: a) determine the crop evapotrans
Publicado em: 2008